Image projection apparatus
AssigneeLG Electronics Inc.
InventorJun Park
Life of this patent
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Abstract
The present disclosure may provide an image projection apparatus including a light source configured to generate a light bundle, a display element configured to form an image using the light bundle, and a illumination system disposed between the light source and the display element, wherein the illumination system includes a plurality of lenses disposed to illuminate the light bundle to the display element, and a polarization forming unit disposed between the plurality of lenses to convert the light bundle into polarized light in the illumination system so as to implement stereoscopic images.
Claims17
An image projection apparatus comprising:
- a light source configured to generate a light bundle;
- a lens assembly;
- and
- a display element configured to form an image using the light bundle, the lens assembly being provided in a path of the light bundle between the light source and the display element, wherein the lens assembly includes
- a plurality of lenses provided to advance the light bundle toward the display element and including a concave lens and at least one convex lens, and
- a polarizing optical device provided between the plurality of lenses to convert the light bundle into polarized light for producing stereoscopic images,
- wherein the plurality of lenses are disposed to form a stop, and the concave lens is provided on the path of the light bundle prior to the stop,
- wherein the polarizing optical device is located at a position corresponding to the stop, and
- wherein at least one of the convex lens is disposed between the concave lens and the polarizing optical device.
An image projection apparatus comprising:
- a light source that generates a light bundle in a first direction;
- a first lens provided in a path of the light bundle in the first direction, the first lens including a concave lens and at least one convex lens;
- a polarizing lens provided after the first lens in the path of the light bundle in the first direction to convert the light bundle into polarized light for producing stereoscopic images;
- a second lens provided after the polarizing lens in the path of the light bundle in the first direction;
- a display device to generate an image for projection using the light bundle;
- and
- a third lens provided to project the light bundle from the display device,
- wherein the path of the light bundle at the display device is in a second direction different than the first direction,
- wherein the first lens is disposed to form a stop, and the concave lens is provided on the path of the light bundle prior to the stop,
- wherein the polarizing lens is located at a position corresponding to the stop, and
- wherein at least one of the convex lens is disposed between the concave lens and the polarizing lens.
Dependencies are inferred from the claim text.